Khunthon ศรีไฉล, Tangwiwat สุพิณ, and Roengsumran โสภณ. 2022. “The Application of Rice Husk Ask for Silicagel Adsorbent Production”. Journal of Metals, Materials and Minerals 7 (1). Bangkok, Thailand:21-30. https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/1448.